<!DOCTYPE html>
<!-- Any copyright is dedicated to the Public Domain.
   - http://creativecommons.org/publicdomain/zero/1.0/ -->

<html class="reftest-wait">
  <style>
  details {
    background-color: orange;
    overflow: auto;
    width: 300px;
    height: 200px;
  }
  summary::-moz-list-bullet {
    /* Hide the triangle for comparing with div in reftest. */
    list-style-type: none;
  }
  summary {
    background-color: green;
    overflow: auto;
    width: 200px;
    height: 100px;
  }
  div.tall {
    background-color: blue;
    border: 1px dotted purple;
    height: 1000px;
    width: 50px;
  }
  </style>
  <script>
  function runTest() {
    var summary = document.getElementById("summary");
    summary.dispatchEvent(new MouseEvent("click"));
    document.documentElement.removeAttribute("class");
  }
  </script>
  <body onload="runTest();">
    <details>
      <summary id="summary">
        <div class="tall">
        </div>
      </summary>
      <div class="tall">
      </div>
    </details>
  </body>
</html>
